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BSI 15/30329816 DC:2015 Edition

$13.70

BS EN 60825-4. Safety of laser products. Part 4. Laser guards

Published By Publication Date Number of Pages
BSI 2015 77
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PDF Catalog

PDF Pages PDF Title
9 1 Scope
2 Normative references
3 Definitions
11 4 Laser processing machines
4.1 Design requirements
4.1.1 General requirements
12 4.1.2 Consumable parts of laser guards
4.2 Performance requirements
4.2.1 General
4.2.2 Active laser guards
4.3 Validation
4.3.1 Validation of performance
13 4.4 User information
5 Proprietary laser guards
5.1 Design requirements
5.2 Performance requirements
5.3 Specification requirements
14 5.4 Test requirements
5.4.1 General
5.4.2 Sample testing
5.5 Labelling requirements
15 5.6 User information
16 Annex A (informative) General guidance on the design and selection of laser guards
A.1 Design of laser guards
A.2 Selection of laser guards
18 Annex B (informative) Assessment of foreseeable exposure limit (FEL)
B.1 General
19 B.2 Reflection of laser radiation
20 B.3 Examples of assessment conditions
22 B.4 Exposure duration
B.4.1 Normal operation
23 B.4.2 Fault Conditions
24 B.4.3 Servicing operations
25 Annex C (informative) Elaboration of defined terms
C.1 Distinction between FEL and PEL
C.2 Active guard parameters
27 Annex D (normative) Proprietary laser guard testing
D.1 General
D.2 Test conditions
30 D.3 Protective exposure limit (PEL)
D.4 Information supplied by the manufacturer
32 Annex E (informative) Guidelines on the arrangement and installation of laser guards
35 E.3.2.10 Location of workers
E.3.2.11 Maintenance provision
E.3.2.13 Guarding environment
42 Annex F (informative) Guideline for assessing the suitability of laser guards
F.1 Identification of hazards
F.1.1 Selection of safety measures
F.2 Risk assessment and integrity
F.2.1 General
44 F.2.3 Practical risk assessment methods
45 F.3 General design
46 F.4 Selection of safeguards
F.5 Guard design and construction
F.5.1 General requirements for the design and construction of fixed and movable guards
F.5.2 Fixed enclosing guards
47 F.5.3 Fixed distance guards
F.5.4 Movable and interlocking guards
F.5.5 Adjustable guards
F.5.6 Temporary guards
F.6 Guard construction and materials
F.6.1 Materials
F.6.1.1 General
48 F.6.1.2 Solid sheet metal
F.6.1.3 Glass
F.6.1.4 Plastics
F.6.1.5 Other materials
F.6.2 Supports
49 F.6.3 Cover plates
F.6.4 Anthropometrical considerations
F.7 Other safety devices
F.7.1 Trip devices
F.7.2 Electro-sensitive protection equipment
F.7.3 Control systems (keys, pressure mats, light curtains)
F.7.3.1 Captive-key systems
F.7.3.2 Pressure sensitive mats
F.7.3.3 Light curtains
50 F.8 Interlocking considerations
F.8.1 Functions of interlocks
F.8.2 Interlocking media
51 F.8.3 Common interlocking methods
F.8.3.1 Guard locking power interlocking
F.8.3.2 Interlocking guard power interlocking
F.8.3.3 Dual-control system interlocking with cross monitoring
F.8.3.4 Dual-control system interlocking without cross monitoring
F.8.3.5 Single channel system interlocking
F.8.4 Failures of interlocking systems
F.8.4.1 Types of failure
52 F.8.5 Security of interlocking systems
F.8.6 Integrity of interlocking systems
53 F.8.7 Choice of interlocking system
F.8.8 Electrical considerations
F.8.9 Mechanical considerations
F.8.9.1 Interlocking devices
F.8.9.2 Mechanical interlocking methods
54 F.8.10 Pneumatic and hydraulic considerations
F.8.10.1 Interlocking devices
F.8.10.2 Pneumatic or hydraulic interlocking methods
F.9 Environmental considerations
F.9.1 Environment
F.9.2 Corrosion
55 F.9.3 Hygiene and guard design
F.9.4 Mist, fumes and dust
F.9.5 Noise
F.10 Installation consideration – Environmental factors – Services
F.10.1 Lighting
F.10.2 Cables and pipes
F.11 Maintenance and service considerations
F.11.1 Operational maintenance of safeguards
56 F.11.2 Properties of laser guard materials
68 Annex G (normative) Beam delivery systems
G.1 General
G.2 Terms and definitions
69 G.3 General requirements
G.3.1 General considerations
70 G.3.2 Protective housing
G.3.3 Access panels and safety interlocks for beam delivery systems using free space transmission
71 G.4 Verification of safety requirements or protective measures
G.5 Information for users
G.5.1 Technical documentation
72 G.5.2 Labelling
G.6 Examples of risk assessments
BSI 15/30329816 DC
$13.70